What Is a HELOC (Home Equity Line of Credit)?
A home equity line of credit (HELOC) is a revolving credit line secured by the equity in your home. Unlike a traditional loan where you receive a lump sum upfront, a HELOC works more like a credit card: you are approved for a maximum credit limit, and you can borrow, repay, and borrow again as needed during the draw period. Your home serves as collateral, which typically means lower interest rates than unsecured credit — but also means your home is at risk if you cannot make payments.
How a HELOC Works: Two Phases
A HELOC has two distinct phases that you should understand before opening one:
Draw Period (typically 5–10 years)
During the draw period, you can borrow from your credit line up to the approved limit. Most HELOCs require only interest-only payments on the outstanding balance during this phase, which keeps your monthly payment low. You can repay principal and borrow again as long as you stay within your limit. Some lenders charge a minimum monthly draw or an annual fee during this period.
Repayment Period (typically 10–20 years)
Once the draw period ends, the HELOC closes and you can no longer borrow. Your outstanding balance converts to a fully amortizing loan, meaning your payments now include both principal and interest. Because you are paying off the same balance over a shorter remaining term, monthly payments can increase significantly — sometimes called "payment shock." If your balance was $50,000 at the end of a 10-year draw period and you have 15 years to repay, your monthly payment will be considerably higher than the interest-only payment you had been making.
HELOC vs. Home Equity Loan
Both products let you borrow against your home's equity, but they work quite differently:
| Feature | HELOC | Home Equity Loan |
|---|---|---|
| Structure | Revolving credit line | Lump-sum loan |
| Interest rate type | Variable (usually prime + margin) | Fixed |
| Payment during draw period | Interest only on balance used | Not applicable (funds disbursed upfront) |
| Payment during repayment | Principal + interest on remaining balance | Fixed principal + interest from day one |
| Best for | Ongoing or uncertain expenses (home renovation with unknown costs) | One-time, known expenses (roof replacement, debt payoff) |
HELOC Interest Rates
HELOCs almost always carry a variable interest rate tied to the prime rate (the benchmark rate set by major U.S. banks, which moves with the federal funds rate). Your HELOC rate is expressed as prime plus a margin — for example, prime + 0.50%. If the prime rate is 7.50%, your rate would be 8.00%. When the Federal Reserve raises rates, your HELOC rate rises with it; when rates fall, your rate drops as well. Some lenders offer a fixed-rate conversion option that lets you lock in a portion of the balance at a fixed rate.
How Much Can You Borrow with a HELOC?
The maximum HELOC amount depends on your home's current value and how much you already owe. Most lenders allow a combined loan-to-value ratio (CLTV) of up to 85–90%, meaning the total of your first mortgage balance plus the HELOC limit cannot exceed 85–90% of the home's appraised value.
Example: If your home is worth $500,000 and you owe $300,000 on your first mortgage, and your lender allows up to 85% CLTV:
- Maximum combined debt: $500,000 × 85% = $425,000
- First mortgage balance: $300,000
- Maximum HELOC: $425,000 − $300,000 = $125,000
Lenders also evaluate your credit score, income, debt-to-income ratio, and employment history. A strong credit profile — typically 680 or above — and a DTI below 43% improve your chances of approval and your rate. See What Is Loan-to-Value Ratio? for more on how CLTV is calculated.
Common Uses for a HELOC
- Home improvement: The most common use. Improvements may increase your home's value, partially offsetting the borrowing cost.
- Debt consolidation: Paying off high-interest credit card debt with a lower-rate HELOC can reduce monthly payments, though it converts unsecured debt into debt secured by your home.
- Emergency fund: A HELOC can serve as a backup source of liquidity — you only pay interest if and when you draw on it.
- Education expenses: Some homeowners use HELOCs to fund tuition, though student loan interest may be more flexible if financial hardship arises.
HELOCs are generally not recommended for funding non-appreciating assets such as vacations, vehicles, or everyday living expenses. Using your home equity for depreciating purchases increases your financial risk without a corresponding increase in asset value.
Risks to Consider
- Variable rate payment shock: If rates rise significantly during your draw period, your payments increase even before the repayment period begins. The transition to fully amortizing payments compounds this risk.
- Your home is collateral: Failure to make HELOC payments can result in foreclosure, just as with your primary mortgage.
- Lender freeze or reduction: Lenders can reduce or freeze your HELOC credit limit during periods of market stress or if your home's value declines — even if you have been making payments on time.
- Closing costs: While often lower than a full refinance, HELOCs may carry appraisal fees, application fees, and annual fees that add to the cost of borrowing.
Use the HELOC Payment Calculator to estimate your draw-period and repayment-period payments. For escrow and property cost context, see What Is Escrow?
Source: CFPB — What is a home equity line of credit (HELOC)?
This definition is for informational purposes only and does not constitute financial advice.